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Stuttering, idle problem Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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erikv11
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Year and Model: 850, S/V70, 06 S60R
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erikv11

Re: Stuttering, idle problem

Post by erikv11 » Wed May 10, 2017 8:19 am

rspi wrote:
Wed May 10, 2017 7:27 am
Why would you put an old rusty contaminated fuel filter back on the car? ...
hanzbe420 wrote:... I wouldn't even bother putting it back on but need car to go get new one. ...
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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hanzbe420
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hanzbe420

Re: Stuttering, idle problem

Post by hanzbe420 » Wed May 10, 2017 7:27 pm

The reason why I had to put it back on was that I had to Get to the parts store to grab a new one and had to use my car. And I have had this car for about 7 years, and I did all the work my self. I used to be on the forums all the time, and I remember you.

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hanzbe420
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hanzbe420

Re: Stuttering, idle problem

Post by hanzbe420 » Sat May 13, 2017 9:02 am

Ok I changed the fuel pressure regulator with a used one from the junk yard. Think it was a stock. anyways I went to the junkyard and I actually found a 850 turbo wagon, because there usually all n/a. So I grabbed the fuel pressure regulator, 5 turbo injectors, and a center window pack switch. So now just gotta put the switch in and the 02 sensor. And then the only code I'll have left is the front knock sensor. But the knock sensor doesn't set off​ the check engine light. I think it's because I cleared it so many times lol. Because I passed emissions without the check engine light on. I think when I got there to the test place I reset it right there before the test and passed. But now it won't even trigger the cel, it will just store it in there. Anyways I'll post back after I put the 02 sensor in and the window switch. But runs perfect now sense the new fuel pressure regulator. Thank you every body for your help.

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misha
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misha

Re: Stuttering, idle problem

Post by misha » Sat May 13, 2017 11:10 am

hanzbe420 wrote:
Sat May 13, 2017 9:02 am
...runs perfect now sense the new fuel pressure regulator. Thank you every body for your help.
:wink:
Btw...How did you reset codes,with scan/flash tool or by disconnecting negative battery terminal for 10-15 min?
If you didn't disconnect negative battery cable to reset,it would be a a good time for that in order to reset fuel trim properly.
Knock sensor code you had was because the car ran extremelly rich because of failed FPR.Now when you replaced it...knock sensor code went away.
hanzbe420 wrote:
Sat May 13, 2017 9:02 am
...I went to the junkyard and I actually found a 850 turbo wagon, because there usually all n/a...
Vacuum controlled fuel pressure regulators which are mounted on fuel rail(Jetronic and Motrnic 4.3 cars) are all the same and have the same part numbers...they are all the same for turbo and n/a.

Take the car somewhere and give it a good 30min spirited high rpm drive,to clear any residue of all that raw fuel which submerged the intake. :wink:
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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hanzbe420
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hanzbe420

Re: Stuttering, idle problem

Post by hanzbe420 » Sat May 13, 2017 12:15 pm

No I used the obd1 Port to check and reset the cel. And no the knock sensor code had been going off for a real Long Time. I'll do it when I have to do the pcv over. And I notice some of the regulators where just right in the fuel rail and no vacuum hose coming out. That's what I meant by different regulators. I took the car for a nice ride on the highway so now I'ma put in the O2 sensor and reset the codes and the only one that should come back is the knock sensor but it goes off once in a while and I just end up resetting it so 90 percent of the time I got no cel.

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misha
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misha

Re: Stuttering, idle problem

Post by misha » Sat May 13, 2017 1:20 pm

hanzbe420 wrote:
Sat May 13, 2017 12:15 pm
... And I notice some of the regulators where just right in the fuel rail and no vacuum hose coming out. That's what I meant by different regulators....
Those are Fuel Pressure Dampers on Motronic 4.4 management cars.On those cars,FPR is in fuel filter area on non turbo cars and in steering rack area on turbos and it's significantly smaller,different part number and not intercangeable with old style one.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
erikv11
Posts: 9690
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
Location: Iowa
Has thanked: 95 times
Been thanked: 284 times
United States of America
erikv11

Re: Stuttering, idle problem

Post by erikv11 » Sat May 13, 2017 10:32 pm

Good info from misha!
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

User avatar
hanzbe420
Posts: 528
Joined: Fri Dec 10, 2010 8:13 am
Year and Model: 2006 s60 2.5T
Location: CT,USA
Has thanked: 4 times
Been thanked: 0
United States of America
hanzbe420

Re: Stuttering, idle problem

Post by hanzbe420 » Sun May 14, 2017 5:09 pm

Yes was very pleased with the quick diagnosis. Tyvm. I put the window switch pack in and now have full working windows. And it runs back to normal now.

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